Desenvolvimento de um sistema de termometria por ultrassom para monitoramento de temperatura
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2017-05-05
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Universidade Federal de Goiás
Resumo
Measuring internal temperature and/or temperature gradient in materials is of fundamental interest
in both engineering and basic sciences because the temperature is closely related to the properties
of the material. The purpose of this study was to develop an ultrasound thermometry system for
internal temperature gradient monitoring of materials subjected to a heat source. A low cost
oscilloscope was used as a system for the acquisition of ultrasonic signals. Jointly, was developed a
computational algorithm responsible for estimating the internal temperature distribution of
materials. For this purpose was used a low cost oscilloscope as a system for the acquisition of
ultrasonic signals. Measurements were taken during the heating and cooling regimen of an
aluminum block. A thermocouple temperature measurement system was used to verify and validate
the temperature distribution obtained by the ultrasound thermometry method. The development of
the computational algorithm responsible for communication and data collection provided real-time
temperature measurements. The comparison of the temperature measurements derived from both
methods showed agreement greater than 96%, with differences lower than 0.70°C. The
methodology presented was relevant within the laboratory context to estimate the internal
temperature of heated materials.
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ANDRADE, P. C. Desenvolvimento de um sistema de termometria por ultrassom para monitoramento de temperatura. 2017. 85 f. Dissertação (Mestrado em Engenharia Elétrica e da Computação) - Universidade Federal de Goiás, Goiânia, 2017.